Sealing machine



June. 30, 1942. F. J. MALLoY 2,288,537

SEALING MACHINE Filed March 16, 1939 4 Sheets-Sheet l Inventor:

Fra RJM lo bguM-MB His Attorheg.

Julie 30, 1942.

FQ J. MALLOY SEALING MACHINE Filed waren 1e. 1939 4 Sheets-Sheet 2 4 /Z /67 /yg 7/ A 4 Inventor- F`T`ar1k J Mallog, 1w

M7/ His Attorney.

June 30, 1942. F. J. MALLoY 2,288,537

' SEALING MACHINE Filed March 16, 1939 4 Sheets-Sheet 3 Figa.

` 95' Invehborr v ,i v Prank JMaIIqg,

s tborneg.

June 30, 1942.

F. J. MALLc'pY SEALING MACHINE 4 sheets-sheet 4 Filed March 1e. l1939 Invntor: Prank J. Mallo His Attorney.

Patented June 30, 1942 UNITED STATESl PATENT OFFICE A y .zasasi f.

Frank J. Malloy, cleveland Heights, omo, assign- `or to General Electric Company, a corporation of New York Application March 16, 1939,-'Sel'ial N9. 262,222 i' My invention relates to apparatus for automaticallyfsealing metal terminal elements to a` preformed'vitreous portion of an'- incandescent lamp or the like and more particularly to the i automatic sealing of an exhaust tube and skirted portions of metal terminal thimbles or skirted terminal poststo aV preformed vitreous cup or vitreous reflector section of an incandescent lamp.

Certain types of precision-built lamps like those disclosed in the United States Patent l ments extending through apertures in the vitreous cup and sealed thereto conduct electrical current to a filament within the enclosure formed by the vitreous parts, and an exhaust tube tipped off close to the vitreous lcup provides for the exhausting andl gas filling of the lamp. 'I'he metal terminal elements which usually provide the sole support for the filament are `attached to the cup by skirted portions which are fused directly thereto and which permanently seal' the joint therebetween as they have either the same rate of expansion or are suiilciently flexible to absorb the difference in expansion of the cup.

In every instance the filament is definitely positioned with respect to either the cup or the terminal elements and therefore depends to a certain extent on the proper positioning of the terminal elements on said cup.

The principal object of my invention is to provide a machine for sealing the skirted terminal elements and the exhaust :tube to the pressed vitreous cup in a satisfactory manner. Another object of my invention is to provide automatic means for sealing the metal terminal elements and the exhaust tube to the cup more rapidly and economically than heretofore. Another object of my invention is to 'provide apparatus for sealing the terminal elements to the cup in a uniform position with relation thereto. Other'A features andI advantages of my invention Will be apparent from the following detailed description and the accompanying drawings of species thereof.

In the drawings, Fig. 1 is a plan view of the machine of my invention with portions broken 23 Claims. (Cl. 4S-2) is a side elevation partially in section of one of the heads of said machine; Fig. 3 is a plan view of the head taken from a section along line 3--3 of Fig. 2; Fig. 4 is a vertical section` of the terminal element supporting portion of the head taken along line 4 4 of Fig. 2 with some of the adjoining portions shown in perspective; Fig. 5 is a plan view of the exhaust tube supporting jaws of the head; Fig. 6 is a side elevation of a portion of the track controlling the `vertical position of the terminal element positioning means and a portion of the operating means therefore; liig.` 7 is a perspective diagrammatic view of the operating cams and other interconnected operating means lior the complete machine; Fig. 8 is a vertical section along line 8-8 of Fig. 1 showingI the sealing unit at one of the stations of the turret and the operatingv means therefor;

Fig. 9 is a front elevation partially-in section of one of said sealing units on a larger scale; Fig. '10 is a side elevationof the tubulating burners, the exhaust tube introducing means and a portion of the head at station E of the turret; Figs. 1`1 and 12 are a side elevation and a perspective view. respectively of a modified head for sealing a dierent form of terminal element to a differente 1y shaped vitreous cup in my machine; and Fig. 13 is a perspective view of another modification of the head of my machine to adapt said machine to another form of vitreous cup.

In the particular form of my machine shown in Figs. 1 4to l0 inclusive, the metal and glass parts that are to be sealed together are placed in the heads 20 and are advanced through a series of stations in the course of the movements thereof at which the various portions of the sealing operation take place. The heads 20 are mounted at regular spaced intervals on theturret 2|' in a circular path adjacent the periphery thereof and are advanced by the turret which is supported and indexed by the usual type of apor reflector-section 22l whichv in this instance conforms to that disclosed in the above-mentioned United State patent'application of D. K. Wright, Serial No. 143,504. The cup 22, as shown in Figs. 2 and 3, is placed in the head 2D with' the outer rim or flange 23 resting on the support 24 so that it is properly positioned vertically, the annularrecess 25.in the rimV portion resting againstthesouter faces of. three raised portions `26 so that the cup is positioned horizonaway to show the underlying sections; Fig. 2 55 tally, and the notch `2`i (only partially shown) The terminal elements or posts 29 in this-case are now fed into the machine, the inner reduced portions 29 thereof being inserted through the terminal apertures 38 (Fig. 4) in the cup 2,2 and' the skirted portions 3| being fitted about the slightly raised inner locating rim 32 of the bosses 33 on the cup 22. In this particular 'instance, the skirted portions 3| of the terminal posts are of a metal having substantially the same expansion characteristics as the glass'of the cup 22 and may for instance be made of the metal alloy known as Fernico" and disclosed in vlPatent 1,942,260, which issued to H. Scott on January 2, 1934.

Before-the head 28 is indexed out of station A', positioningv means or guide tubes 34 located below each of the terminal posts 29 are raised to the position shown in Fig. 4 so that the leads 35 attached to the inner ends of said posts are placed in the snugly fitting axial passages in the caps 36 surmounting said tubes 34. The purpose of said guide tubes 34 is to hold the posts 29 in position during the subsequent operations and they can be used alone to position the posts in case it is dsirable to lomit the locating rims 32 on the cup 22, although the posts are then preferably' introduced at a following station of the head 20 when the-guide tubes 34 are :in the which fastens the lower ends of said guide tubes.

together. A cover plate 40 extends between the block 31 and the support 24 to keep out broken 4| to the upper portion 43 of the'track and the guide tubes 34 remain in the up position.

During the succeeding indexing movement of the turret 2| which carries the head 20 into the rst work station of the machine, the cup 22 is clamped to the support 24 'by the arms 6|6| which are moved down until the shoes 62 in the outer ends thereof rest on the outer flange of said cup 22. 'Ihe arms 6| are fastened to the shaft 63 which is supported by the brackets 64 on the top surface of th'e turret 2| and are actuated by the movement resulting in lever 65 whenl the roller 66 thereon passes from the stationary cam 61 (Figs. 1 and 2) during the indexing movement. The cam 61, which is held'inposition bythe bracket68 extending from the cen- .ter post 69 of the machine, turns the lever 65 at stations A and B against the contracting force of the spring 10 which thereafter actuates said lever 65. 'I'he spring 10 extends between a post (not shown), extending from the turret 2|, and

- the link 18 allows.

glass, etc. The roller 38 at this station is located within the track segment 4| (Figs. 2 and 6)y which actuates the guide tubes 34 by moving upwardfrom a position adjacent the lower portion 42 of the track to a position adjacent the upper portion 43 thereof, and is actuated through the rod 44 on which it is mounted. The rod 44 is slidably mounted in the hollow post 45 which is fastened to the frame 46 of the machine by bracket 41 and to the adjacent ends of the lower and upper portions 42 and 43 ofthe track bythe shaft 5|! through the cam 54, and also actuates the roller 55 on the lever 56 which engages the ways of said cam 54, the rod 51 and the lever 58 on lsaid shaft 50. 'Ihev lever 56 is pivoted on the pin 59 which extends from a portion of thg 60 frame (not shown).

Following the upward movement of the guide tubes 34, an indexing movement of lthe turret 2| takes place, advancing the head 20 from station A to station B. No operations are performed on the lamp parts at this station by the mach-ine and it is simply provided to allow the insertion of the terminal posts 29 intov place .on the cup 22 providing they have not already been placed thereon at the preceding station. At this station, however, the leads 35 on the ends of the terminal posts 29 must .be threaded through the apertures in the caps 36. During the indexing movement. the roller 38 passes from the segment the lever which actuates the shaft 63 on which' the arms 6| are mounted through the rod 1| and-the arm 12 on said shaft 63. casions the cup 22 is not placed in the head-2|| and the guide tubes 34 would eventually be injured by the sealing fires at some Aof the stations if the shield 13 were not lifted to a position over the 'guide tubes 34. The said shield 13, which as shown in Figs. 2 and 3 extends through the cover plate 40 to the shaft 14, is actuated by the additional downward movement of the arms 6| when the cup 22 is not contacted, as the arm 15 on the shaft 63 then moves so that the pin 16 thereon is moved more than the slot 11 in The additional movement of the pin 16 causes the link 'I8 to swing the arm v'I9 on the shaft 14 causing the shield 13 to be moved up over the guideI tubes 34. The shaft 14 supporting the shield -13 is located within the tube 88 which is held in place by the bracket 8| extending upward from the turret 2|. The exact position taken by the shield 13 is under the control of the arm 82 which acts as a stop for the lever 65 and which is fastened to the post 83 extending upward from the base 84.

The indexing motion just referred to advances the head 20 into station C which corresponds to each of the succeeding stations up to and includ y skirts l3| of the posts 29 so that they are sealed together, and pushing said posts 29 so that said skirts 3| are embedded in said bosses 33.

The heating apparatus at each of these stations consists of a pair of rotatable burners 85-85 (see Figs. 8 and 9) arranged side by side and each comprising' a pair of jets 86-86 lo-l cated on opposite sides of their'axis of rotation.

, The burners are set 90 apart and are rotated at the same speed in opposite directions so that they revolve in intersecting paths like the blades restricted flames onto the skirt 3| and boss 33 of saidpost. Each of the burners is mounted `on the hollow shaft 81 which extends upward ,through the base 88 and the, gas' distribution' On some ocand the hollowed out space 9| in the shaft 01 sealed by the sleeve 92 which terminates at the apertures in said shaft 91 within the distributing head 99. The heads 99 have a passage 02 therein completely aroundv the shaft 21 so that the combustible gas ows constantly thereto and are connected tov a source thereof through the pipes 94. If desired, a manifold can be placed about the machine in the usual manner to conduct the combustible gas to each of the units and suitable valves can be con, nected to each unit to control the flames at each station. Suitable master valves operated by cams on the main cam shaft 52 can also be provided for reducing the size of said names during the indexing intervals if desired.

Support for the-burners 95as well as all other portions of each of the sealing units depends on the bases '99 which as shown in Figs. 1 and 8 are mounted on an arcuate plate 95 located above all the stations from C to `D-inclusive. The plate 95 is supported in turn both by the bracket 95 extending from the center post 59 of the machine and the brackets 91, 99 and 99 which extend outward and downward about the turret 2| to the frame 45 (only partially shown).

Rotation of the burners 95 is brought about through the gears 90 which in each sealing unit mesh together so that said burners 95 cannot interfere with each other and which are driven from la third gear meshing with one of the gears 99. The gear |99 in each case is attached directly to a sprocket III which is rotated about the pin |02 extending from the base 99ltherewithvbyV a common actuating means engaging each of said sprockets |0| through the chain |92. Since the sealing units extend along a single path. the chain |92 engages the sprockets. |0| of each in turn and then passes over the' ,l idler sprockets'l and |95 carried by the brackvets |05 an'd |01, the drive sprocket |92, the

take-up sprocket |09 and the idler sprockets III and I|| carried by the brackets |I2 and 2 respectively'before re-engaging the sprockets |l|. The brackets |95, |91, ||2 and ||2 are stationary members being fastened to the plate 95 whereas the arm ||4 which supports the take-up sprocket |09 is pivoted on the pin ||5 extending from the bracket 95 and is biased by L the spring ||9 which extends from an arm fastened to said bracket 95. The driven sprocket Ill is one portion of a drive lsystem transferring to the chain |02 the motion of the cam shaft 52 and is mounted-on the shaft ||1 car ried by the bracket ||2 extending from the plate 95. 'I'he drive system from the shaft ||1 lconsists of the sprocket I |9, the chain |20, the sprocket |2| and the shaft |22 held by the bracket 90 as shown in Figs. i and 8 and as shown in Fig. I of the bevel gears |22 -and |24, the shaft |25, the sprocket |29, the chain |21 and the-sprocket |29 'on the cam shaft 53.

Associated with the burners85 are the push rods |20 which apply the necessary pressure to the terminal posts 29 to cause the skirts 3| thereof to sink into the thickness of the cup 22.' As shown in Figs. 'I and 8, the push rods |30,are located directly -above the terminal posts 29 in the sleeves 92 and extend upward into the threaded bushings |2| in the upper portion of the yoke |32 which is carried by the base 98. The push rods |39 rest on the terminal posts 29 only during the rest period of the head 2p ai; which time they are pressed down by the expanding force of the springs |32 which butt against the bushallowed the arm |25 or by the rods |49 within 3 ings m and the blocks lu which are clamped thereto. The threaded bushings. |3| can be,

screwed in or out 'of the yoke |22 to adjust the compression of the springs |32 and consequently the pressure kexerted by the push rods |20 `to match the conditions existing at each particular stationand the particular type of glass and fire setting used. During the indexing intervals, the push rods I20Qre raised to a position above the terminal posts 29 by a lever |95 which is then turned about the pins|25 in the bases 92 so that the rollers |31 are carried against and raise the blocks |24. 'I'he push rods |20 are kept from turning by the blocks |24 which in each unit butt against each other and are so shaped as to prevent any rotative mvement. The lever |25 of each sealing unit is actuated by the collar |29 which provides a circumferential groove in which the roller |29 on the end of said lever |35 is 1ocated and which brings about the necessary motion in the lever |25 bymmoving vertically. The collar |39 is slidably mounted on the center post 59 of the machine and is held in place by the lever |40 which extends about the lowerportion thereof and engages a second circumferential groove therein through the rollers I4| at opposite sides thereof. The motion ofthe lever I 40 necessary to shift the push rods |20 is brought about by the rotation of the cani' |42 on the cam shaft 52 (Fig. 7) which is engaged by the roller |43 on the lever |44 which in turn transfers its motion to lever |49 through the rod |45, lever |45 (Figs. 1 and 8) and bar |41. 'I'he lever |44 is pivoted on the pin |49 which extends from a portion of the frame not shownl'whereas. levers |40 and |45 are pivoted on the supporting brackets 95 and 99 respectively for the plate 95. The extent to which the skirts 2| of the terminal posts 29 are forced into the bosses 32 of the cups 22 is controlled either by the length of movement the guide tubes 34 and the caps 25.as the said rods can be positioned so that the lower ends of the leads 35 of the terminal posts engage and rest on the upper ends thereof at the limit of mo,- tion. Adjustment of th rods |49 is made following the loosening of the screws |50 .which pull the split lower portions of both the block 39 and the guide tubes 34 together about the lower end of said rods |49. The operations of the sealing units alone are sufiicient to seal the posts 29 to the cups v22 at a fairly rapid rate even when said cupsA 22- are made of hard glass such as that as Pyrex which has a relatively high softening temperature and at the completion of all operations at station D all portions of the skirt 2| contacting the cup 22 are tightly sealed thereto.

Simultaneously with the performance -of the sealing operations at station D, a sharp pointed rod |5| is raised into the exhaust aperture |52 in the cup 22 and turned so as to loosen 'and dislodge any particles of glass, etc., that may be obstructing said aperture: I'he rod |5| is a permarient part of the head 20 as shown in Figs. 2 and 4 and is located in slide ways in the blocks 21 and 39 and the arm |53 in which it is positioned vertically by the collar |54 which rests on said arm |53. The arm |52 is fastened to the arm |55 extending from the lower end of the post |56 which, although slidably and rotatably mounted in the bracket |51, is held in position by the engagement of the collar |59 with said bracket; |51. The co1lar,| 55 is clamped onto the post |59 and positions said post |56 vertically by resting on a portion of the bracket |51 and radially by engaging through a groove therein a ridge |59 (Fig. 2) extending along the adjacent .push rod |60 produces the upward movement in the rod |5| by moving vertically so as to engage and push the lower end of the arm |55 and the post |56 to the new position and duringsaid movement causes the spring |62 which butts against the upper end of said post` |56 and is largely located within well therein to be compressed. The push rod |60 is actuated by the lever |63 which is connected thereto by the. link |64 and which engages the' cam |65 on "the cam shaft 53 .through the roller |65. The lever |I63 pivots on the lay shaft |29 like the other similarly cam actuated apparatus. The lever |6| produces the turning'motion in the rod |5| through engagement with the tongue |66 f the cross arm |61 on the lower end thereof which is carried into the groove |68 of said lever |6| when the rod |5| is raised to its upper position. The upward -movement also carries the tongue |69, on the end of the cross arm |61, from the groove in the arm |10 which, up to now, has kept the cross arm |61 from turning. The arm |10 is held in a fixed position by the rod |1| (Fig. 4) which extends from the bracket |51. When the lever |6| is properly registered with the cross arm |61, it and .the pin |12 on which it' is mounted are turned by means operated by the cam H13 on the cam shaft 53 which consists of the' lever |14 engaging the cam |13 through the roller |15 and lever |6| through the. link |16.. The lever |14l is biased by the spring |11 so that the roller |15 follows the curvature of the cam |13. Both vthe pushV rod |60 and the pin |12 -are held in place on theframe by a bracket (not shown) which allows theml to move as desired andvwhich isb a duplicate of a similar bracket shown with similar means at a following station of the head. The return downward movement of the push rod |92 which extends between arm |90 and a post (not shown) extending downward from the lower surface of the turret 2|. During this interval.

and during all other prior operations of the machine the jaws |80 and |8| remain at .a set vertical position determined by thev position of the collar |93 on the lower endof the hollow column |88 as the spring |84 which separates the arm |83l and the base 84 of the head 20 pushes said column |88 upward until said collar |93 rests against the bracket |51. The collar |93 is screwed onto the lower endof the column |88 and is locked in place thereon by the nuts |95. Since the jaws |80 and |8| must be aligned with the other portions of the head to hold the exhaust tube at the proper position, the arm |83 is provided with a rearward extending portion |86 which, together with the plate |91 attached thereto, engages the opposite sides of the post 83. The final indexing movements of the head 20 carrying it into station E advance the roller |89 of .continues to hold the jaws |80 and |8| in an open is followed by therod |5| because of the expansion of the spring |62 which is held in of the operations necessary to seal an exhaustA tube to the cup 22 above the exhaust passage |52 therein.. The operation referred to' is the partial closing of the jaws |80- |8| (Figs. 1, 2 and 5) which are to support the exhaust tube at a later I instant and which are pivoted on pins |82 extending upwardly from the arm |03.` The jaws |80 and |8| are caused to move together by the gear segments |84 on the lower portions thereof which mesh together and are actuated through the rotation ofthershaft |85 to which jaw |8| is connected 'through the arm |86 and link |81 and which extends down through the hollow column |88 supporting the arm |83. The indexing movement referred to carries the roller |89 on the arm |90 which is mounted on the lower end of vthe' shaft las into the ways of the @am 19| (Fig.

'1) which turns said arm |90 and said shaft |85 sufliciently to nearly close the jaws |80 and |8|. Normally the jaws |80 and |8| are kept widely separated by the contracting force o f the spring position. u

When the head 20 is completely advanced into station E, an exhaust tube 200 is placed between the jaws and |8| in the proper position to be sealed to the cup 22. The exhaust tube 200 in this instance is automatically fed into position by apparatus (not shown) like that already disclosed in United States Patent 2,005,496 which issued'on June 18, 1935, to Donovan and Illingworth, and is placed in the head 20 by movement of the transfer jaws 20| and 202 thereof. 'Ihe jaws 20| and 202 are mounted on the bracket 203 which turns in a clockwise direction about the pin 204 to carry the exhaust tube 200 to the proper position above the exhaust aperture |52 and releases said exhaust tube 200 and moves back from this posi.- tion following'the closing'of the jaws |80 and |8| of the head 20. This present movement of the jaws |80 and |8| is caused by further adjustment of the arm which is brought about by motion of lever |99 (Fig. 7) and shifts the spring |92 from one side ,of the shaft |85 to the opposite side so that it Anow functions to hold said jaws |80 and |8| closed. The'lever |99 is operated by the lever 205 which is connected thereto through the rod 206 and engages the ways of the cam 201 on the cam shaft 53 through the roller 208. Lever |99 is pivoted on the pin |99 which is held by a portion of the frame (not shown). The sealing of the exhaust tube 200 to the cup 22 takes place both at station E and at station F indicated in Fig. 1, and is brought about by the'series of four burners 209 at station E and -by a similar set (not shown) at station F. The burners 209 as shown in Figs. 1 and 10 are mounted in pairs on the pipes 2|0 and are arranged so as to direct fairly sharp llames upon all sides of the cup 22 adjacent the exhaust aperture |52 and the lower end of the exhaust tube 200. The combustible gas is conducted .to the burners 208 through the pipes 2 l0 which are connected to the' heads 20 of the turret 2| they are moved to and i from the sealing position between indexing movements by the rotation of the shafts 2|2 and 2|4 which are connected together by the intermeshing gear segments 2|8 on each. The shaft 2I4 extends through the bracket 2|5 to the arm 2|1 (Fig. 7) which is connected through the rod 2|8 to the lever 2|8 and causes the burners 208 to be moved at the proper interval because of the engagement of the roller 220 on said leverv2|8 with the ways of the cam 22|. The exhaust tube sealing burners at station F are supported and actuated in a similar manner to those of station E in that they are indirectly mounted in pairs on the cup 22 until station F is reached at which time the jaws |80 and |8| supporting it are moved down a short distance to bring the end of said exhaust tube 200 further into the flames and then, after an interval, are'moved still further down carrying the said exhaust tube 200 against the cup 22. These movements of the jaws |80 and |8| are brought about by the downward adjustment of the hollow column |88 which is actuated by the lever 228 through engagement with the collar |88 on the lower end of said column |88. 'I'he lever 228 is comprised oi' two sec-.- tions lying at opposite sides of the collar |88 which they engage through rollers like that shown at 228 and which are pivoted on the ends of the pin 230 extending from the bracket |81 and is operated by the downward movement of the claw 23| (Figs. 1 and 7) which is located above the other end thereof at this station. The claw 28| is pivotally mounted on' the pin 282' held by the base 233 and is influenced by the motion created in the roller 234 on the arm 235 by the cam 236 which is transferred thereto through the shaft 231 carried' by a portion of the frame (not shown), the arm 238, the universal joints 288 and 240 and the bar 24|. The c'law 28| engages the roller 242 in the .puter end of the leverr i and sealing of the cup 22 thereto, the pointed rod |5| of the head 28 is again raised into the exhaustopening |52 of said cup 22 but this time to Vprevent said opening |52 from being closed.

The rod |8| must necessarily extend into the4 opening in the exhaust tube 200 for this purpose and can if desired be used to govern the size of the exhaust passage at the junction -of the tube 200 and the cup 22. 'Ihe rod |5| is actuated as in the prior instance by a push rod 2`44 carried by a bracket 245 which engages the end of the post |56 and arm |85 and which is operatedbythemotion of the roller 248 engaging the cam 241 on the cam shaft 58 which is transferred to saidpush rod 244 through the lever 248, bar 248`"(in two sections laterally oisetffrom each other in Fig. 'I to preserve the relation of the part? of the machine as much as possible), the lever 288 pivoted on a 248 to follow the contour of the cam 241, by the"YY spring which extends to a portion of the frame (not shown). To destroy any tendency of the rod |5| to .stick to the cup 22 orthe exhaust tube 200, said rod |5| is turned back and forth by the arm 282 (Fig. 7) which engages'th'e tongue |88 on the cross arm |81 thereof in the same manner as the arm |8| atstation D when the rod |8| is in the raised position. The arm 252 is fastened to the pin 258 pivotally mounted in the bracket 248 and is actuated by the lever 284 to which it is'connected by the rod 255 and which engages the cam 258 through the roller 251. The lever 254 is biased by the spring 258 which extends located only at station F. The means for this purpose is the latch 288 which is pivotally mounted on the lever 228 and which swings to a position under the stud 280 carried by the bracket |51 when the claw 28| pulls said lever 228 to the lower position. The latch 258 is biased by the spring 28| which butts against the lever 228 so that it is moved until the stop screw 282 engages the said lever 228 and is correctly positioned below the stud 288. In this latter position. the roller 288 on the upper end of thelatch 288 is not actually in contact with the stud 288v but is separated about one thirty-second of 'an inch therefrom and the hollow column |88 and the jaws |80 and |8| move upward as urged by the expanding force of spring |94v when the roller 242 is carried out from under the claw 28| by the indexing movement of the head 20. This motion causes the exhaust tube 200 to be stretched and worked at the point it is attached to the cup 22y making a more satisfactory seal.

With the succeeding indexing motion offthe head 28 the iirst of the course of events leading to the removal of the finished product of thismachine begins as the guide tubes 84 are lowered to their starting position. Up to this time the roller 88 of the supporting apparatus for the guide tubes 84 has been located within the raised track portion 48 (Figs. 1 and 6) but at station G, indicated in Fig. 1, the roller 88 passes into the track segment 284 and is lowered into alignment with the lower track portion 42 thereby.

- 284 and the .up movement of segment 4| by the same rotative motion. The return movements oi' the track segments 284 and 4| follow closely the indexing or the muere nghererrom ana-beauf prior to the advancing of another set of rollers 88 into the segments during the same indexing period. As at station Af the upper and lower track portions 48 and 42 respectively aresupported by the bracket 288 on the hollow post 288 which is supported by the .bracket 218 from the frame 48 vand engaging the shaft 58. The succeeding indexing movements of the head 28 cal'l'ym it into station H and again into station Acause the jaws |80 and' |8| to be separated and the hold down shoes 62 to be lifted from the cup 22 by the arms 6|. The rst of these actions is brought about by the cam 21| which is located on a portion of the frame 46 below the turret 2| between these stations .and which engages the roller |89 on the arm |90 controllingthe movement of the jaws- |80 and' |8I. During this movement, the spring |92 swings to the opposite side of the shaft |85 and is then in position to hold the jaws |80 and |8| open. The arms`6| are operatedby the. cam 61 which engages and actuates the roller 66 on the arm 65 of the control means therefore.

The only. remaining undescribed operation of the machine occurs during the course of the movements of the head 20 from station H to station B, and consists in the release of thelatch 259 of the head 20 so that the jaws |80 .and |8| are caused to move up to the original position. Theoperation actually finishes the cycle of operation, as the jaws |80 and |8| do not function gages the roller 213 on the latch 259 and turns 'said latch 259 so that it is moved out from under s on lthe upper ends of said guides 34 which enthe stud 260. The cam 212 is mounted at these y and provides vertically varying ways which catch the roller 213 and pull it downward during the indexing motion. l

Although the 'machine now completely described is only designed to function properly lwith substantially the form of terminals elements 29 and cup 22 shown, suitable modifications therein can be made with'out departing from the scope of the invention to allow it to operate equally as well with other forms thereof such as those shown in Figs. l1 and 12. In this latter instance, the cup 22' is deeper and is provided with a rneck portion 214 closed off by a relatively heavy end v'wall 21.5 to which the terminal elements or thimbles 216, in this case, and the 4exhaust tube 200 are sealed. The cup 22' is placed in the head 20 (Fig. 12) first, and is so arranged thereon that the outer rim or ange 23 rests on the support 24' and the recess 25' engages the raised portion stations on the frame 46 underlying the turret 2| asbestos block 299 the lower ends 28| of said pins 21.9 engage the upper ends of the rods |49'.

Following the insertion of the cup 22' and the terminal thimbles 216 the operations of the machine take place in the regular order, the iirst being the closing of the holding jaws 284 and 285 (only the former appears in full in the drawing) on the neck portion 214 of the cup 22' or the closing of said jaws 284 and 285 and the swinging of the heat shields 286 and 281 (only one is Vshown completely) into position thereabove if the cam 61. Adjoining portions 290 of the jawsv 288 and 285 located about the pins 288 are provided with gear teeth which mesh together and l which cause said jaws 284 and 285,119 be operated as a unit. The cup 22' is not engaged directly by the jaws 284 and 285 but is contacted through an about the upper portion of the neck portion 214 of said cup 22' and which prevents vertical movement thereof due to the slightly larger size of the remainder of said neck portion 21d. The heat shields 286 and 281 are pivoted in a similar man- 211 is aligned with the mark 218 on the support 24'. The lug 211 corresponds to the notch 21 on the cup 22 in that it bears a definite relation to the apertures 30' which are provided to accommodate the lament supporting leads of the lamp and which are to be sealed off by the metal terminal elements or thimbles 216. Although in the prior instance the terminal elements 29 are inserted into the head 29 either before or after the upward movement of the guides 34', in this instance it is preferred that the -terminal elements or thimbles 216 be placed in the head 29 after the guides 34 rise to their upper position as then the upper ends of the pins 2,19carried thereby vextend through the apertures 30 and the thimbles 216 are restedthereon. The upper ends of the pins 219 are somewhat smaller than the adjacent portions thereof and the tubular portions 280 of the thimbles 216 pass down over said ends until said 4thimbles 216 engage the larger adjacent portions which support them. 'I'he pins 219 are held by the guides 34 which slidably engage the lower ends 28| thereof and the caps 36' ner on the pins 288 and are operated through the posts 292 extending sideward and upward from the jaws 284 and 285 respectively against which they are held by the contraction of the springs 293. The springs 293 extend ybetween the upper end of the posts 292 andthe posts extending from the heat shields 286 and 281. Since the posts 292 are moved with'the jaws 284 and 285, the heat shields 286 and 281 follow the motion thereof and finally come in contact with-each other forming a single shield over the'guides 34' when the head 20 does not contain a cup 22. Should the head 29 contain a cup 22', the movement of the shields 286 and 281 is arrested when the posts 294 extending from the lower face thereof engage said cup 22 and the continuing movement ofthe jaws 284 and 205 is taken up by the expansion of the springs 298.

The following operations of the machine in this instance correspond exactly to those of the machine alreadyo described, although the sealing units located at stations C to D inclusive are mounted higher above the-surface of the turret 2| than before and engage the tubular portion 280 of the terminal thimbles 216. During the operation of the sealing units, the jaws and |8|' are separated to give easy access to the thimbles 216 and are closed to the position shown after the completion of the sealing operation;

' The jaws |80 and |8I' are closed on the exhaust tube 200 and are yshifted vertically by means corresponding to that shown in the other construction. 'In some instances, it may be desiron each 'which fits snugly In such instances the edge of the hole Another modification of my machinesuitable for sealing'the terminal elements 29 to the cup 22" is partially shown in Fig. 13. This modification illustrates the construction of the head f of a machine best suited for operation with another form of cup 22" much shallower than those shown heretofore and especially suited to close off the neck "of the conventional form of lamp bulb in the manner disclosed inl United States Patent 2,098,080 'issued November 2, 1937, to D. K. Wright. The cup 22" is placed on the support 24" with the outer rim or flange in engagement with the three equidistantly spaced pins 295 which locate it at"thedesired position thereon and is orientated in the correct position by the insertion of the reduced portion 296 of the terminal posts 29 through the apertures 30-30I in said cup 22" and the support 2l" respectively.

Thesealing of the skirts 3|"-3| of the terminal posts 29 to the cup 22" is brought about at the variousstations of the turret 2|" at which burners like those already described are located but differs from the former instances in that the push rods or abutment members |30 engaging the terminal posts 29 remain stationary and the support 24 is raised. In this instance,rthe support 24 is mounted on the upper end of the hollow post 29.1 and normally remains in the po=j sition shown because of the expanding force of the spring 298 which is located between the flange 299 on the lower end of the hollow post 291 and the lower surface of -the turret 2|". As

in the prior instances, the downward pressure is applied to the posts 29 during the rest period of the head 20 at said stations, but in thisinstance a lever corresponding" to lever |35 is moved upwardagainst the flange 299 and raises the support 24 and cup 22" the necessary amount'to carry the ends of the posts 29 against the push rods |30". `Thre apparatus lfor supporting the exhaust tube 200 also differs somewhat from the other apparatus shown in that the exhaust tube'200 is now gripped by the two-part jaws |80 and |8|" which are pivoted on the pins |82" extending from the slide 300. The

slide :on is carried in the ways of the bracket. I

30| -which is fastened to the support24 and allows the jaws |80 and |0I." to be withdrawn from a position over the cup 22 when the posts 29 are being sealed thereto. At the `moment the exhaust tube 200 is introduced into themachine, the slide 300 is moved forward by the' :15gg 60 302 which engages -the lpost 303 extending fr a second slide 304 within ways of slide 300 until the forwardl limit of motion is reached at which time .aipost (not shown) extending through a .slot in the bracket 30| from the lowersurface the post 303 and the post 301 and .the jaws |80" and |8|" are hel'd in an open position by the spring 308 which extends between posts in the inner ends of each. The arm 302 is fastened to the pin 309 which extends `through the turret 2|" and-which is operated in much the `same manner as the lever by a cam corresponding to cam 61 although these parts are notI shown.

`As in both prior cases, a rod |5l is provided to clear and keep the exhaust opening |52" communicating with the passage in the exhaust tube 200. In this instance, the rod ISI" extends through the support 24" and the hollow post 291 to the arm 3|0 which is separated from saidV hollow post 291 by the spring 3| and is operated as in the prior instances by means engaging the end thereof and said arm 3|0. In this case, the flames of thesealing fires strike the support 2l when the head 20" does not contain a cup 22" as no guard is provided therefor.

What I claim as new and desire to secure by Letters Patent of the United States is:

1. In a machine for sealing the skirts of metal terminal elements to vitreous cups around openings in said cups, the combination of a rotatable turret, a plurality of heads mounted at regular the cup and the skirt of the terminal element carried by the head and means for producing a relative movement between said cup and skirt to cause the rim of said skirt to be sealed and 'embedded in said cup around said opening.

2. In a -machine for sealing the skirts of metal terminal elements to vitreous cups around openings in said cups, the combination of a rotatable turret, a plurality of heads mounted at regular y intervals adjacent the periphery thereof each comprising a support fora vitreous cup, means burners to rotate about the terminal element when the head is located atl said stations to cause said portions of said `cup and skirt to be uniformly heated, andv means located at least at some ofA said stations for urging said. terminal element toward said support to cause the'/ rim of the skirt thereof to be sealed andembedded in said cup around said opening.

3.` In a machine for sealing the skirts of metal terminal elements to vitreous cups aroundJ openings in said'cups, the combination of a rotatable ,y

turret, a plurality of Vheads mounted at regular intervals adjacent the periphery thereof each comprising a'support for ,la vitreous cup, means for definitely locating said cup thereon and means extending through said support for locating adjacent terminal elementson definite axes inter-.,

secting the-support and cup So that the skirts -of said terminal elements are` adjacent toA the edges of the saidopenings in said cup, a plurality the Vhead and in alignment with the said axes through the terminal elements at several of the stations taken by the heads along the path of movement for directing flames against the adjacent portions of the cup and the skirts of the Y terminal elements carried by the head, gears connected to each of said burners fork causing the rotation of said burners about the said axes and v terminal elements to vitreous cups around openings in said cups, the combination of a rotatable turret, a plurality of heads mounted at regular intervals adjacent the periphery thereof each comprising a rsupport for holding a vitreous cup in an inverted position', means projecting from said support and engaging the rim portion of said cup for centering it thereon, means mounted on said turret adjacent the said support arranged to engage the upper portion of said cup to hold it in position on 'said support and means for actuating said last-mentioned means in proper time relation to the rotation of the turret, means mounted adjacent said support for positioning a terminal element with its skirt in sealingrelation to the edges of the opening in said cup, means located along. the path of movement .of a head for heating the adjacent portions of the cup and the skirt of the terminal element carried by the head, and means for producing a relative movement between said cup and skirt to cause the rim of said skirt to be embedded -in the cup and become sealed thereto around said opening.

5. In a machine for sealing the skirts of metal terminalelements to apertured vitreous cups, the

combination of a rotatable turret, a plurality of" heads mounted at regular intervals adjacent the periphery thereof each comprising a support for a vitreous cup, means projecting from"-said vs upport and engaging the rim portion of said cup for v centering it thereon, and a guide tube extending through said support and in alignment with an aperture in said cup adapted to receive portions of a terminal element placed on the cup to cause said terminal element to be positioned thereon in sealing relation to said cup around saidaper-f'v ture, means located along the path of movement of a head for heating the adjacent portions of the cup and the skirt of the'terminal element carried by the head and means for producing a relative movement between said cup and skirt to cause the rim of said skirt to be embedded in said cup around said aperture, means located along the path of movement of a head for heating the adjacent portions of the cup and the skirt of the terminal element carried by the head and means for producing a relative movement between said cupand skirt to cause the rim of -said skirt to be embedded in thefcup and become sealed thereto around said aperture.

7. In a machine for sealing the skirts of metal terminal elements to apertured vitreous cups, the combination 0f a rotatable turret, a plurality 0f heads mounted'at regular intervals adjacent cup to position said terminal element in sealing relation to said cup around said aperture and limiting means associated with said guide/means for permitting Aonly a limited movement of said terminal element toward said cup and support,

means located along the pathof movement of a head for heating the adjacent portions of the cup and the skirt of the terminal element'carried by the head and means for producing a the cup and become-sealed thereto around said aperture. I

' 6. In a machine for sealing the skirts o f metal terminal elements to apertured vitreous cups, the

combination of a rotatable turret,- a plurality vof heads mounted' at regular intervals adjacent the periphery thereof each comprising a support for a vitreous cup, means projecting from said sup port and engaging the rim portion of` said cup for centering it thereon, and a guide extending through` said support and an aperture in said relative movement between said skirt and cup permitted by the limiting means to cause the rim of the skirt to be embedded in the cup and become sealed thereto around said aperture.

8. In a machine-for sealing the skirts of metal terminal elements to vitreous cups around openings in said cups, the combination of a rotatable turret, a plurality of heads mounted at regular intervals adjacent the periphery thereof each comprising a support for holding a vitreous cup in an vinverted position, means projecting from said support and engaging the rim portion of said cup and a notch therein for centeringY and orientating said cup thereon, a pair of' arms mounted adjacent said support arranged' to be moved into engagement with the upper por-tion ofsaid cup and means for actuating said arms to cause the cup to be held against the support thereby,l means mounted adjacent saidsupport for positioning a terminal elementwith its skirt in sealing relation to the edges of the opening in said cup, means located along the path of movement of a head for heating Ythe adjacent portions of the cup and the skirt of the terminal element carried by the head and means for producing a relativce movement between said skirt and cup to cause the rim of said skirt to be embedded in the cup and become sealed thereto around said opening.

9. In a machine for setaling the skirts of metal terminal elements to apertured vitreous c ,upsf the combination of a rotatable turret, a plurality of heads mounted at regular intervals v adjacent the periphery thereof each comprising a support for a vitreous cup, means projecting from `said support-and engaging the rim portion of said cup for centeringit thereon, lpositioning l means extending throughsaid support and in alignment with Lapertures in said cup for locating a terminal element 'placed' thereon in sealing relation to said cup laround said aperture, a

shield mounted adjacent said positioning means.

from the heat of the sealing operation, means 1ocated along the path of movement of a,head for heating the adjacent portions of the cup and the skirt of the terminal element carried by the head and means for producing a relative movement between said skirt and cup to cause the rim of said skirt to be embedded in the cup and become sealed thereto around said aperture.

10.` In a machine for sealing the skirts of metal terminal elements to apertured vitreous cups, the combination of a rotatable turret, a plurality of heads mounted at regular intervals adjacent the periphery thereof each comprising a support for holding a vitreous cup in an inverted position, means projecting from said support and engaging the rim portion of said cup for centering it thereon, means extending through said support and in alignment with an aperture in said cup for positioning a terminal element placed thereon in sealingrelation to said cup around said aperture, a pair of arms mounted adjacent said support adapted to be moved into engagement with the upper portion of said cup, means for actuating said arms to cause said cup to be held against thesupport thereby, a shield Y mounted adjacent the terminal element positioning means adapted to be moved to a position thereabove, and meane actuated by the additiona-l movement of the said arms when a cup is 4not engaged thereby for movingA the shield to said position to cause the -terminal element positioning means to be protected from the heat of the sealing operation, means located along the path of movement of a head for heating the adjacent portions of the cup and the skirts of the terminal element carried by the head and means for producing a reltaive movement between said skirt and cup to cause thevrim of saidskirt to be embedded in the cup and become sealed thereto around said aperture.

v il. In a machine for sealing exhaust tubes and the skirts of metal terminal elements to apertured vitreous cups, the c mbination of a rotatable turret, a plurality o heads mounted at regular intervals adjacent the periphery thereof each comprising a support for a vitreous cup, means for definitely locating said vitreous cup thereon, means mounted adjacent said support for positioning a terminal element with its skirt in sealing relation to the edges of an aperture in the said cup and means located adjacent said support adapted to hold an exhaust tube in alignment with an exhaust aperture in said cup, means located along the path of movement of a head'for heating the adjacent portions of the cup and the skirt of the terminal element carried by the head, means for producing a relative movement between said skirt and cup to cause the rim of said skirt to be embedded therein and become sealed thereto around the adjacent aperture, means further along the path of movement of said head for causing the exhaust tube holding means thereof to engage and position an exhaust tube' against the exhaust aperture of the cup, and means for heating the adjoining portions of said exhaust tube and cup to cause them to be sealed together. l A

l2. In a machine for sealing exhaust tubes and the skirts of metal terminal elements to apertured vitreous cups, the combination of a rotatable turret, a plurality of heads mounted at regular intervals adjacent the periphery thereof'each comprising a support for a vitreous cup, means for dennitely locating said vitreous cup thereon.

means mounted adjacent said support for positioning a terminal element with its skirt in sealn ing relation to the edges of an aperture in the said cup, and means located adjacent said support adapted to hold an exhaust tube in alignment with an exhaust aperture in said cup, means located along th'e path of movement of a head for heating the adjacent portions of the cup and the skirts of the terminal element carried by the head, means for producing a relative movement between said skirt and cup to cause the rim of said skirt tobe .embedded therein and become sealed thereto around the adjacent aperture, means further along the path of movement of said head for causing the exhaust tube holding means thereof to engage and position an exhaust tube against the exhaust aperture of the cup, movable burners located adjacent the said turret for heating the adjoining portions of said exhaust tube and cup to cause them to be sealed together and means for moving said burners out of and into operative relation to the heads during rotation of the turret.

13. In a machine for sealing exhaust tubes and the skirts of metal terminal elements to apertured vitreous cups, the combination of a rotatable turret, a. plurality of heads mounted at regular intervals adjacent the periphery thereof each comprising a support for a vitreous cup, means for definitely locating said vitreous cup thereon, means mounted adjacent said support for positioning a terminal element with its skirt in sealing relation to the edges of an aperture in the said cup and movable means located adjacent said support adapted to hold an exhaust tube in alignment with an exhaust aperture in said cup, means located along the path of movement of a head for heating the adjacent portions o! the cup and the skirts of the terminal element carried by said head, means for producing a relative movement between said skirt and cup to cause the rim of said skirt to be embedded therein and become sealed thereto around the adjacent aperture, means further along the path of movement of said head for causing the exhaust tube holding means thereof to engage and position an exhaust tubeadjacent to the exhaust aperture of the cup, means for heating the adjoining portions of the said exhaust tube and cup and means for iirst moving said exhaust tube holding means toward the said support and cup to cause the end of said exhaust tube to contact and seal thereto and thereafter moving said exhaust tube holding ing relation to the edges oan aperture in said cup, means located adjacent said support adapted to hold an exhaust tube in alignment with an aperture in said cup and a rod extending through said support and in alignment with an exhaust aperture in said cup arranged to be moved thereinto, means located alongtlie path of movement of a head for heating the adjacent portions of the cup and the skirt of the terminal elements carried by the head, means forproducing arelative movement between said skirt and cup to cause the rim of said skirt to be embedded in the cup and become sealed thereto around the adjacent aperture, and means further along the path of movement of said head for causing the exhaust tube holding means thereof to engage and position an exhaust tube with an end thereof against said exhaust aperture, means for heating the adjoining portions of said exhaust tube and cup to cause them to be sealed together and means for moving the said rod through said exhaust aperture in the cup and into 4the exhaust` the said cup, jaws located adjacent said support adapted to hold an exhaust tube in alignment with an exhaust aperture in said cup, and a slide for supporting said jaws adapted to carry them to and from a position above the said support and cup, means located along the path of movement of a head for heating the adjacent portions of the cup andthe skirt of the terminal element carried by the head, stationary abutment members `above said cup support, means forraising said cup support to carry the terminal elements against said abutment members and cause the tervals adjacent the periphery thereof each comprising a support for holding a vitreous cup in an inverted position, means projecting .from said support and engaging the rim portion of said cup for centering it thereon, jaws mounted adjacent said support adapted to engage and grip the upper portion of said cup for holding itin place,

"means for actuating said jaws in proper time relation to the rotation of said turret, guide tubes extending through said support and in alignment with apertures in said cup adapted to receive portions of terminal elements placed on said cup tov cause said elements to be positioned thereon in sealing relation to vsaid cup around said apertures, a shield mounted adjacent the said support adapted to be moved over said guide tubes,

la nger extending from said shield and movable f through the .position taken by said cup and by rim of said skirt to be embedded in the cup and become sealed thereto around the adjacent aperture, and means further along the path of movement of said head for causing Athe jaws thereof to grip an exhaust tube, and for causing the said slide to move said jaws to a position over the support on said head and for positioning the exhaust tube in alignment with the exhaust aperturelin the cup, and means-for heating the adjoining portions of said exhaust tube and cup to cause them to be sealed together.

16. In a machine for sealing the skirts of metal terminal elements to vitreous cups around openings in said cups, the combination of a rotatable turret, a plurality of heads mounted at regular intervals adjacent the periphery thereof each comprising a. support for a vitreous cup, means for definitely locating said cup thereon Vand means mounted adjacent, said support for positioning a terminal element with its skirt in'sealing relation to the edges of an opening in the said cup,

a plurality of'burners located at several stations along the path of movement of a head for directing Aflames against the adjacent portions of the cup and skirt of the terminal-element carried by the head, means for causing said burners to rotate about the terminal element when the head is located at said stations to cause said portions of the cup and skirt to be`unifonnly heated, sta-` -tionary abutment members above said cup support, and means located at least at some ofv said stations for raising said support to carry the terminal elements against said abutment members and cause the rim of the skirt thereof to be embedded in said cup and become sealed thereto around the opening therein 17. In a machine for sealing exhaust tubes and the skirts of metal terminal elements to apertured vitreous cups, the combination of a rotatable turret, a plurality of heads mounted at regular insaid shield, means for actuating said shield either to carry the said finger against said cup or, if

a cup is not present, to the said position above the guide tubes for protecting them from the heat of the sealing operation, and means located adjacent said support adapted to hold an exhaust tube in alignment with an exhaust aperture in said cup, means located along the path 0f ymovement of a head for heating the adjacent portions of the cup and the skirts of the terminal elements carried by the head, means for producing a relative movement between said skirts and cup to cause the rims of said skirts to be embedded therein andlbecome sealed thereto around the adjacent aperture, and means fur- `ther along the path of movement of the head for causing the exhaust tube holding .means thereof to engage and position an exhaust tube with an end thereof against the exhaust yaperture of the cup, and means for heating the adjoining portions of said exhaust tube and cup j to cause them to be sealed together.

18. In a device of the character described, means forsupporting a glass member having a plurality of openings therein comparatively close together with terminal members having metallic skirt portions in sealing relation to the edges of said openings, and a plurality of burners mounted to rotate on axes in alignment with said openings, each of said burners comprising a pair of jets located on-opposite sides of its axis of rotation and arranged to direct flames toward the opening and associated terminal skirt portion with which it is aligned, and means for rotating said burners at the` same speed so that the jets revolve in intersecting circular paths.

19. The combination set forth in claim 18, in-

cluding a'rod member disposed in the axis of4 rotation of each burner and arranged to engage the end of the associatedterminal members, and means for effecting a relative movement of the rod members and the said support means toward each other to press the skirt portions of the terminals against said glass member around the openings therein.

20. In a device of the character described, a movable carrier having thereon headsfeach comprising means for supporting a glass lmember having openings therein located relatively close together, upwardly extending rod-like guide members in alignment with said openings and arranged to support, at their upper ends, terminal members having metallic skirt portions in sealing relation to the edges of said openings, clamping means arranged to engage said glass member and clamp it to itsv support, burners located above and adjacent to the path Iof travel of said heads for heating the said skirts and the adjacent portions of said glass member, shield means carried by each of said heads, and means actuated by the clamping means oneach head upon absence of a glass member from said head for moving the shield means to a position over the guide members on the head to protect them from the flames of the burners.

21. In a device of the character described, an intermittently movable carrier having thereon heads each comprising support means for a glass member having a plurality of openings therein with terminal members having metallic skirt portions in sealing relation to the edges of said openings', a plurality of sets of burners mounted at spaced heating stations adjacent to the path oi' movement of said heads and arranged to heat the said terminal skirt portions and the adjacent portions of said glass member, push rod members associated with each set of burners and arranged to engage the terminal members, means for applying pressure to said push rod members to press the terminal members against the glass member during periods of rest of the carrier atA the heating stations, and means for removing the pressure from said push rods during movement o! said carrier.

22. In a device of the character described, anJ intermittently movable carrier having thereon heads which are indexed through a plurality of stations by said carrier; each of said heads comprising support means for a glass member having a plurality of openings therein, vertically disposed rod-like guide members in aligmnentwith said openings and arranged to support, at their upper ends, terminal members having metallic skirt portions in sealing relation to the edges of said openings,and clamping means arranged to engage said glass member and clamp it to its support upon movement of said carrier; a plurality of sets of burners mounted at spaced heating stations adjacentto the path of movement of said heads and arranged to heat the said terminal skirt portions and the adjacent portions of the glass member, and push rod members associated with each set of burners and arranged to engage the terminal members to urge the skirt portions thereof against said glass member during the heating thereof.

23. A device as set forth in claim 22 wherein the guide members are provided with axial passages for receiving downward extensions of the terminal members, and adjustable rod members in said passages arranged to be engaged by the lower ends of said extensions to limit the amount of downward movement of said terminals caused by said push rods.

FRANK J. MLLOY. 

